Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/16212
Title: Performance of Azolla caroliniana Willd. and Salvinia auriculata Aubl. on fish farming effluent
Other Titles: Performance de Azolla caroliniana Willd. e Salvinia auriculata Aubl. em efluente de piscicultura
Authors: Toledo, Jos? Julio
Penha, Jerry Magno Ferreira
Keywords: Animals
Aquaculture
Comparative Study
Eutrophication
Fern
Growth, Development And Aging
Methodology
Time
Water Management
Animal
Aquaculture
Eutrophication
Ferns
Time Factors
Water Purification
Azolla Caroliniana
Salvinia Auriculata
Issue Date: 2011
metadata.dc.publisher.journal: Revista Brasileira de Biologia
metadata.dc.relation.ispartof: Volume 71, Número 1, Pags. 37-45
Abstract: The increasing release of untreated fish farming effluents into water courses that flow to the Pantanal wetlands in Mato Grosso (Brazil) may drive this ecosystem to eutrophication. Therefore, the growth of Azolla caroliniana Willd. and Salvinia auriculata Aubl. in fish farming effluent and their effect on its quality were evaluated for 48 days in a greenhouse. The results were compared to those obtained in a nutrient rich solution (Hoagland 1/2 medium). Azolla caroliniana showed lower relative growth rate in fish farming effluent (0.020 d-1) than in Hoagland 1/2 medium (0.029 d-1). However, S. auriculata grew slightly better in fish farming effluent (0.030 d-1) than in Hoagland 1/2 medium (0.025 d-1). The species apparently contributed to reduce nitrate and phosphate concentration in Hoagland 1/2 medium. However, in fish farming effluent, only electrical conductivity and pH were reduced by plants compared to the control without plants. Thus, A. caroliniana and S. auriculata show low potential for improving effluent quality.
metadata.dc.identifier.doi: 10.1590/S1519-69842011000100007
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